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http://hdl.handle.net/2445/33149
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DC Field | Value | Language |
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dc.contributor.author | Ximenis i Llussà, Laia | - |
dc.contributor.author | Calvet i Porta, Jaume | - |
dc.contributor.author | Enrique, J. | - |
dc.contributor.author | Corbera Simon, Jordi | - |
dc.contributor.author | Fernández de Gamboa, C. | - |
dc.contributor.author | Furdada i Bellavista, Glòria | - |
dc.date.accessioned | 2012-12-18T13:30:52Z | - |
dc.date.available | 2012-12-18T13:30:52Z | - |
dc.date.issued | 1999 | - |
dc.identifier.issn | 0567-7505 | - |
dc.identifier.uri | http://hdl.handle.net/2445/33149 | - |
dc.description.abstract | A network of twenty stakes was set up on Johnsons Glacier in order to determine its dynamics. During the austral summers from 1994-95 to 1997-98, we estimated surface velocities, mass balances and ice thickness variations. Horizontal velocity increased dow nstream from 1 m a- 1 near the ice divides to 40 m a- 1 near the ice terminus. The accumulation zone showed low accumulation rates (maximum of 0,6 m a- 1 (ice)), whereas in the lower part of the glacier, ablation rates were 4,3 m a- 1 (ice). Over the 3-year study period, both in the accumulation and ablation zones, we detected a reduction in the ice surface level ranging from 2 to 10 m from the annual ve rt ical velocities and ice-thinning data, the mass balance was obtained and compared with the mass balance field values, resulting in similar estimates. Flux values were calculated using cross-section data and horizontal velocities, and compared with the results obtained by means of mass balance and ice thinning data using the continuity equation. The two methods gave similar results. | - |
dc.format.extent | 8 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Universitat de Barcelona (UB). Institut de Cièncias de la Terra Jaume Almera (ICTJA) | - |
dc.relation.isformatof | Reproducció del document publicat a: http://www.raco.cat/index.php/ActaGeologica/article/view/75661 | - |
dc.relation.ispartof | Acta Geologica Hispanica, 1999, vol. 34, num. 4, p. 403-410 | - |
dc.rights | (c) Ximenis i Llussà, Laia et al., 1999 | - |
dc.source | Articles publicats en revistes (Dinàmica de la Terra i l'Oceà) | - |
dc.subject.classification | Glaceres | - |
dc.subject.classification | Geodinàmica | - |
dc.subject.classification | Livingston (Shetland del Sud : Illa) | - |
dc.subject.classification | Antàrtida | - |
dc.subject.other | Glaciers | - |
dc.subject.other | Geodynamics | - |
dc.subject.other | Livingston Island (South Shetland Islands) | - |
dc.subject.other | Antarctica | - |
dc.title | The measurement of ice velocity, mass balance and thinning-rate on Johnsons Glacier, Livingston Island, South Shetland Islands, Antarctica | eng |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 146874 | - |
dc.date.updated | 2012-12-18T13:30:52Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Dinàmica de la Terra i l'Oceà) |
Files in This Item:
File | Description | Size | Format | |
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146874.pdf | 2.63 MB | Adobe PDF | View/Open |
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